Library of 19^th Century Science:
The Golden Age of Geology



CONTRIBUTIONS

to

THE NATURAL HISTORY

of the
  
  UNITED STATES OF AMERICA

by

LOUIS AGASSIZ

Second Monograph

In Five Parts. - I. Acalephs in General. - II. Ctenophorae. - III. Discophorae. - IV. Hydroidae. - V. Homologies of the Radiata.

With Forty-Six Plates

Volume IV

BOSTON:
LITTLE, BROWN AND COMPANY.
LONDON:
TRÜBNER & CO.

1862.

This electronic edition prepared by Dr. David C. Bossard
from original documents in the library holdings of
Dartmouth College, Hanover New Hampshire.

December, 2005.

Copyright © 2005 by David C. Bossard.